Citizen seismology helps decipher the 2021 Haiti earthquake.

On 14 August 2021, the moment magnitude () 7.2 Nippes earthquake in Haiti occurred within the same fault zone as its devastating 2010 7.0 predecessor, but struck the country when field access was limited by insecurity and conventional seismometers from the national network were inoperative.

Diverse styles of submarine venting on the ultraslow spreading Mid-Cayman Rise.

Thirty years after the first discovery of high-temperature submarine venting, the vast majority of the global mid-ocean ridge remains unexplored for hydrothermal activity. Of particular interest are the world's ultraslow spreading ridges that were the last to be demonstrated to host high-temperature venting but may host systems particularly relevant to prebiotic chemistry and the origins of life. Here we report evidence for previously unknown, diverse, and very deep hydrothermal vents along the approximately 110 km long, ultraslow spreading Mid-Cayman Rise (MCR).